stuff is now buildable with dune-cmake
[cmake] tell other modules we're building libdunecommon
remove problematic provider default tpl
Merge remote-tracking branch 'origin/master' into destroy_autofools

Conflicts:
	cmake/DuneUtils.cmake
	dune/stuff/common/math.cc
	dune/stuff/grid/provider/gmsh.hh
	dune/stuff/test/fem_projection.cc
remove obsolete config include branches
[grid.provider] if you make a type definition conditional you need to guard EVERY USAGE of that type with the same conditional!
[cmake] fixup blas/boost finding/linking
Merge branch 'master' into destroy_autofools
Replaced std::abs by direct computation of absolute value

Necessary because no overloaded version of std::abs
exists for unsigned long long
[functions.local] added jacobian()
[discretefunction.projection] removed outdated sections
[grid.search] moved search from discretefunction.projection
[discretefunction.projection] make use of grid.search
[common] adds a numeric_limits fallback to double when there's no specialization
[fem] removes useless istl proxy object
[df] fixes het. projection loosing view references
[fem] adds stencil creation util functions
[fem|test] fix includes
Merge remote-tracking branch 'origin/gridentitysearch-refactor'
Merge branch 'master' into destroy_autofools

Conflicts:
	dune/stuff/discretefunction/projection/heterogenous.hh